TASMON is a background RPG that runs minimally in your taskbar while you work. Your monsters automatically battle for resources and eggs, which you collect to expand your roster of 156 species through evolution and awakening mechanics. Between passive progression, weapon forging, and community-driven weekly updates, it rewards players who enjoy long-term collection goals without demanding active attention.
About this game
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.
Players, last 71 days
Peak 232 · Low 56
Daily peak concurrent players, sampled once a night from Steam.
What players are saying
▼ Not recommended0 hrs
Don't support AI slop.
Gen AI was used in multiple artworks and character designs.
So far so good, in my opinion they need to rework the egg drop rate from monsters since i didn't get one yet, but the gameplay looks solid, the devs are trying to communicate with their playerbase and make the changes that their gamers want to see.
Edit: later on it's easier to get eggs to hatch new monsters, harder stages have higher egg drop %.
🎄 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 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 you load them. Tap a mission to open detailed steps. A "Beginner's Guide" now sits at the top. The battle HP bars now show your barrier amount and the seconds left. Your inventory and box no longer jump away from where you were looking when they refresh. Added 1000 to "Roll until hit" (for owners of 1000-Roll Etching). Gear forged from a Tasmon now always gets lines that fit its role first, and its uniqu...
🎃 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. Eggs from the days you played add up, so you can claim them all at once (until Nov 9). 24 Halloween-themed Tasmon (Common to Arcana) hatch from Halloween Eggs. Collect 7 kinds of Halloween Tasmon to earn the title "Collector of the Pumpkin Moon" and an exclusive friend card. Halloween Tasmon have their own Sphere Board island. Depending on the Tasmon, the special sphere at its core is either "Pumpkin Fortune" (egg drop +0.5-1%) or "Pumpkin Talisman Lure" (Element Tower talisman drop +5-10%). The talisman bonus multiplies the base talisman chance (+10% means 1.1× the base chance, not +10 percentage points). 🔧 Bug fixes Added a fix for an issue where the game could fail to start after an update on some PCs.
Posts come from Steam's official announcements feed.
