An idle RPG that lives in your taskbar. While you work, your monsters auto-battle and bring back eggs and loot. Collect 156 species, evolve and awaken them, forge one-of-a-kind serial-stamped weapons, and shape every weekly update from the in-game suggestion box. Free to play.
Catch up on TASMON: Taskbar Monsters with the developer’s own announcements. Start with the newest recorded post, then explore the details before you return.
3recent developer posts shown belowSelected from the developer record, separately from press coverage. Announcements are not necessarily shipped patches.
Last successful news check: This is our collection date, not the date of the latest patch.
Newest in this record ·
Update: Hero Growth and Bug Fixes
From the recorded announcement
⚔ Hero Growth Unlocks when you clear Stage 7 of a Hero Series Vol.1 hero on Death mode (either hero unlocks it). Winning a Vol.1 stage on Death mode sends enhancement material to that stage's box. Once per stage per day, shared by both heroes. Claim it in the Hero window. Use enhancement material to strengthen that…
Read more of this announcement
⚔ Hero Growth Unlocks when you clear Stage 7 of a Hero Series Vol.1 hero on Death mode (either hero unlocks it). Winning a Vol.1 stage on Death mode sends enhancement material to that stage's box. Once per stage per day, shared by both heroes. Claim it in the Hero window. Use enhancement material to strengthen that hero only. Every effect is added outside the usual caps from gear and other sources. ① Stat points: press "+" to raise ATK, Max HP, Skill Power, Crit Rate and Crit Damage (the price rises as you go). ② Extra spheres: up to 20 slots. Choose ATK, Max HP or Skill Power for each. ③ Hero keystones: 5 kinds. Exchange enhancement material for them; they go to your items, and you use one by picking it in a keystone slot on the hero's Sphere Board tab. Every 6th exchange lets you choose the one you want. Keystone slot 1 opens at 20 stat points and 6 Extra Spheres; slot 2 opens once all 40 stat points and all 20 Extra Spheres are assigned. Your caps rise with how many stages you have cleared with that hero. Resetting uses a Hero's Rebuild Tome. The Battle Pass gets a new tier 36: 1 Tome free and 2 with Premium. The DLC "Hero Growth Support" launches at the same time. It speeds up material gathering; growth caps and effect sizes do not change. 🎁 Invite a Friend Added Invite a Friend to the Friends screen. Share your friend code; if your friend enters it within 7 days of starting, you both receive a Partner Egg. A Partner Egg hatches one of 11 Tasmon you can only meet through invites (each of you rolls separately). The player who enters the code also gets a Legend Egg.…
Update: Score League Season 2 "Holy Night Realm" and Bug Fixes
From the recorded announcement
🎄 Score League Season 2 "Holy Night Realm" Season period: Nov 7, 2026 0:00 to Jan 9, 2027 0:00 (JST). It starts automatically when Season 1 ends. 10 season-limited Tasmon join: Holy Candle / Gingerman / Holy Night Reindeer / Bell Penguin / Holly Princess / Strawberry Shortcake / Snowman King / Noel the Polar Bear /…
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🎄 Score League Season 2 "Holy Night Realm" Season period: Nov 7, 2026 0:00 to Jan 9, 2027 0:00 (JST). It starts automatically when Season 1 ends. 10 season-limited Tasmon join: Holy Candle / Gingerman / Holy Night Reindeer / Bell Penguin / Holly Princess / Strawberry Shortcake / Snowman King / Noel the Polar Bear / Gift Santa / Jingle Bell. Get them from the Exchange and Season Eggs. There are 5 combo bonuses that activate when you put the right Tasmon in the same party. Collect all 10 to earn the title "Collector of the Holy Night Realm", an exclusive friend card, and the UI theme "Holy Night Festival". Season Eggs now only hatch Tasmon from the current season. ✨ Improvements Improved connections from mainland China to online features (gift codes, Ranked Match, friends, and more). After pressing Claim on a gift code, the game now shows that it is sending. Strengthened measures against cheating. 🔧 Bug fixes Fixed an issue where resetting the Sphere Board could ignore the second click while the button kept switching back and forth. Fixed an issue where Unequip All also removed gear from Tasmon on an expedition (including those back but not yet reported). Their gear now stays on. Fixed the numbers being swapped in the English message for Unequip All. 🎃 Notice Halloween Eggs can be claimed until Nov 9. Use the Claim button at the top of the News / Mail window.
🕙 This update is scheduled for around 10:00 PM Japan time (UTC+9) today, November 1. Everything in this update is based on the ideas and reports you sent to the Suggestion Box. Thank you for all your feedback! ✨ Craft Pity Each time you fail in a row when crafting toward the same rarity, your success rate goes up a…
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🕙 This update is scheduled for around 10:00 PM Japan time (UTC+9) today, November 1. Everything in this update is based on the ideas and reports you sent to the Suggestion Box. Thank you for all your feedback! ✨ Craft Pity Each time you fail in a row when crafting toward the same rarity, your success rate goes up a little. Immortal always succeeds on the 3rd try, Arcana on the 6th, Beyond to Cosmic on the 15th, and Celestial on the 30th. The count resets on success. The Craft button shows your current success rate. 🕯 Awakening Pity When an attempt in the Awakening Rite fails, your next attempt's success rate goes up a little. The increase scales with that attempt's rate: at 90%, each failure adds +2.5%, so the 5th try always succeeds (only for that Tasmon and that stage; it clears on success). The Rite screen shows the bonus you have now and how much you'll get if this attempt fails. "Auto-fill candidates" now stops once the success rate reaches 90%, so it no longer adds Tasmon you don't need. 🎖 Battle Pass Tier 35 Added Tier 35 to the Battle Pass. Free: "Egg slots +3". Premium: "Battle speed +10% (permanent)". These egg slots are added on top of the ones you buy with Gold (they don't raise the purchase price). The +10% battle speed stays on once claimed (together with Premium's 1.1x battle speed, it becomes 1.2x). 📮 Quality of Life You can now buy Tasmon slots up to 600 (at the same price as the last tier). Added "Use all" to the Coin window (press twice to confirm; you can see everything you got in a list). Party presets now remember gear too, and re-equip it when…
64.8% of 105 Steam reviews are positive, which after adjusting for sample size gives a reception score of 55.3. The developers have shipped 14 substantial updates in the past six months, adding 31.3.
reception 55.3·support +31.3·Strong
Computed from Steam’s own review tally and observable developer activity — never from anyone’s opinion of the game. How this is calculated
Should you look into this?
From Steam's own record
Development
Actively supported
Last heard from developers
2 days ago
Historical posting rhythm
every ~3.5 days
Substantial updates (6 mo)
14
Current silence
within normal range
The developers post roughly every 3.5 days and were last heard 2 days ago — within their normal range. 14 substantial updates recorded in the past six months, 5 classified as major.
Last successful news check: Nov 11, 2026, 2:03 PM UTC. This is when we checked Steam, separate from when the developer last posted.
Before buying, confirm the edition, Steam activation and availability in your region. Search results may include DLC or other editions.
Distilled by the oracle
Our coverage
2 dispatches written from this game’s announcements
patchSep 27, 2026
TASMON's Major Update Adds Hero Series Vol.3 and Rebuilt Etching System
What changed
Author BlackCatMan's September 27 update to TASMON: Taskbar Monsters arrives on three fronts: a new hero event series, a new DLC pack, and a heavily revised Etching system rebuilt from player feedback.
Hero Series Vol.3 introduces a pair-based structure. Players choose one of two pairings at the outset — Eden (Dark) with Feni (Fire), or Carbuncle (Light) with Tita (Earth) — and begin with no heroes. Clearing each of the six difficulty tiers earns a Sigil; collect all six and both heroes of the chosen pair join the roster. The final difficulty pits both fallen versions of the pair against the player simultaneously, with a click-to-target mechanic for boss selection. Completing Normal mode yields Arcana versions of the heroes; Death mode yields Century versions. Heroes recruited in Death mode and raised to Awakening 6 receive a world-unique "Hero No." Vol.3 requires clearing Torment to unlock.
A new DLC, TASMON: Hero Pack 2, adds the unchosen pair, cosmetic appearance options (Fallen / Awakened), an extra daily egg draw, ten Crystals of Turning, auto-expeditions with finds routed to an expedition pocket, and a 30% reduction in expedition time. The update notes that Vol.3 is fully playable without the pack.
Etching received the most structural work:
Bulk rolling in increments of 10, 30, 50, or 100
Results display the best value of every effect that appeared, alongside the current line, for direct comparison
Target rolling: set a desired effect and a stop condition; the system halts automatically on a match
Slot transparency: visible list of possible effects and their maximum values
A confirmation click required for large spends
Bulk and target rolling unlock after clearing Hell
A one-week window to convert heroes into Hearts is also noted, though no further details are provided in the source.
For players who found Etching opaque, the new comparison and target-rolling tools address the system's two most friction-heavy steps in a single update.
releaseAug 13, 2026
TASMON: Taskbar Monsters Launches Free-to-Play as a Desktop-Edge Idle RPG
TASMON: Taskbar Monsters, developed by BlackCatMan, launched on August 12, 2026 — after what the developer acknowledged were "a couple of last-minute time changes." The game is free to play and supports both English and Japanese interfaces.
The concept is built around unattended progression: a compact window sits at the edge of the desktop while the player works or studies, and the game's creatures — Tasmons — fight and collect eggs on their own. Player interaction is reserved for the moments between: hatching, evolving, and equipping.
What's in the game
156+ species hatchable from battle-dropped eggs, spread across 10 rarity tiers
A Sphere Board skill system tied to level milestones, with companion power inheritance
Awakening mechanic: stacking duplicates unlocks up to 6 awakening stages; a fully awakened Tasmon generates a serial-numbered weapon unique to that creature
Combat built on six elemental matchups, three-monster parties, and gear crafting
An in-game Suggestion Box that feeds weekly updates shaped by player feedback
The weekly update cadence driven directly by player submissions is the detail worth watching: it suggests the game's feature set is still actively forming around its earliest community. Whether that responsiveness holds as the playerbase grows remains to be seen.
Two years of development
■ substantial ■ routine
32 announcements · 14 substantial · 20 months with nothing
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⚔ Hero Growth Unlocks when you clear Stage 7 of a Hero Series Vol.1 hero on Death mode (either hero unlocks it). Winning a Vol.1 stage on Death mode sends enhancement material to that stage's box. Once per stage per day, shared by both hero…
🎄 Score League Season 2 "Holy Night Realm" Season period: Nov 7, 2026 0:00 to Jan 9, 2027 0:00 (JST). It starts automatically when Season 1 ends. 10 season-limited Tasmon join: Holy Candle / Gingerman / Holy Night Reindeer / Bell Penguin /…
🕙 This update is scheduled for around 10:00 PM Japan time (UTC+9) today, November 1. Everything in this update is based on the ideas and reports you sent to the Suggestion Box. Thank you for all your feedback! ✨ Craft Pity Each time you fa…
🎃 Halloween Event (Oct 27 - Nov 2) Get 1 Halloween Egg for each day you launch the game during the event. On days you own the Premium Pass, you get 2 more (3 a day). Claim them with the Claim button at the top of the News / Mail window. Eg…
Update scheduled: Sunday, October 25, 2026, 22:00 (JST) ⚔ Hero Series Act 4 Act 4 has been added to the Hero Series (free). Choose one of two hero pairs to travel with. In Act 4, once you have enough eggs to fully awaken both heroes, hero e…
Update: October 21, 2026 🎫 Enhanced Pass 2 is now on sale It contains the same as the Enhanced Pass. For 30 days you get 1.1x monster EXP, +6 egg pockets, better hatch rarity, instant chest opening, and extra Score League rewards. Pass day…
Scheduled release: Sunday, October 18, 2026, 22:00 JST ⚔ Ranked Match is here Open the "🛡 Battle" tab in the Mission window to auto-battle other players' parties. Register 3 to fight: strength comes only from species and rarity (everyone i…
Scheduled: October 11, 2026, 22:00 JST (13:00 UTC) Based on what you sent us through the Suggestions box, we've added the following. Thank you for all your feedback! ✅ Adopted and new features All six Etching features ("Premium roll", "10 r…
Scheduled: October 11, 2026, 22:00 JST (13:00 UTC) 👥 Friends Open it from the "👥 Friends" tab in the Missions window. Enter a name and press "Issue friend code" to get your 8-character friend code. Enter another player's code to send a re…
☁ Steam Cloud Save is here Your save data is now stored in Steam Cloud. You can continue on another PC with the same Steam account. If you had started separate games on different PCs, you can choose which data to play with ("This PC" or "Cl…
Thank you for playing TASMON! We plan to add the following three features soon, one after another. ────────────────────────────── ◆ Schedule ────────────────────────────── 1. Steam Cloud Save … October 5, 13:00 UTC (22:00 JST) 2. Friends … …
Based on your feedback on Discord and in the Suggestion Box, we made the following improvements. ────────────────────────────── ◆ Etching ────────────────────────────── - When "🎯 Auto-roll" ended without hitting the effect you wanted, the …
Some of the perks in TASMON: Hero Pack 2 were not unlocking for players who bought it. We are sorry for the trouble. ────────────────────────────── ◆ What was fixed ────────────────────────────── Even after buying the pack, these three stay…
Hero Series Vol.3 is here. We have also rebuilt Etching based on your Suggestions posts, and fixed the bugs you reported. ────────────────────────────── ◆ Hero Series Vol.3 ────────────────────────────── This time the heroes come in pairs. …
We have fixed a problem where some skills unexpectedly lost power. Please update the game again. Adjusted how often rare skills appear Fixed a situation where rare candidates never appeared on Arcana Tasmon and above. → To make up for it, w…
Bug fixes and balance adjustments ◆ Unique character buffs were not being applied properly They are now fixed and apply as intended. ◆ The effect shown when a rare item drops from a chest has been reworked From Normal II onward, the effect …
Scheduled to go live on September 13 at 6:00 AM PDT. Tier II - from "Normal II" through "Torment II" Four new difficulties open beyond Oblivion I. Equipment level bands extend to match the gear that drops in Torment II, and the item fusion …
■ Hero No. reset A bug could cause a Hero challenge to be recorded under a different difficulty than the one actually played. Today's update fixes this. Because of this, Hero Numbers for Hero Series Act 2 (Shiva / Fenrir) can no longer be t…
🎉 Headline features Hero Series Vol.2 - Shiva, the Frostbloom Spear Princess / Fenrir, the Verdant Gale Wolf-King Knight Two new heroes are waiting for you, both in their fallen form. Just like Vol.1, it is a seven-rank journey, and at the…
\We have fixed An issue was found where the values for certain equipment were incorrect when the main effect was "Skill Power", "Attack Speed", or other stats.Equipment obtained from now on will have the correct values.Existing equipment in…
\ Patch NotesThank you for playing! Today, we have implemented the following updates to the game.⚠️ Important: Safety Fixes & Bug ResponsesSave Data Protection EnhancementIf loading fails, the system will now completely stop writing data an…
“Heroes” is now officially available!The “Hero Pack: Dark Crimson” DLC is also available for purchase.This update also introduces a major overhaul of the combat system, Simplified Chinese language support, UI improvements, and various bug f…
Save Data Transfer・Added a Save Transfer Code feature. From the ⚙ menu, you can export your current save data as a code and import it on another PC or account. ・Your original save data will remain on the original PC after the transfer. ・Ple…
Following the implementation of Cloud Save, we confirmed an issue where save data may be mixed up when multiple Steam accounts are used on the same PC.Consequently, we have temporarily disabled the Cloud Save feature.To safeguard your save …
Key Fixes (Detailed)Storage bug fix: Fixed a bug where, as storage expanded, later page numbers became unclickable, making stored equipment impossible to retrieve. This was caused by page numbers overflowing beyond the window width and gett…
Thank you so much for all your feedback and reports! Based on the input we received, we have implemented the following updates: ■ UI Freeform Inventory Placement: You can now place equipment in any grid slot you like. Drag to move items to …
Thank you so much for playing TASMON: Taskbar Monsters, and a huge thank-you to everyone who sent in bug reports! Thanks to all of you, we passed 6,000 downloads within 24 hours of release!! We're genuinely moved that so many of you are enj…
■ Bug Fixes - Fixed a rare issue where, after closing a window, part of the screen could stop responding to clicks on other applications Thank you for playing TASMON: Taskbar Monsters! We'll keep working on improvements.
