Summon Master: Slime Idle RPG

3.9
21 reviews
Content rating
Rated for 3+
500+
Downloads
Content rating
Rated for 3+
Learn more
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this game

Summon Master: Slime Idle RPG is a summon game where you build a slime army, evolve through different ages, and grow stronger in idle RPG battles. Summon slimes, collect items, clear dungeons, upgrade your tech tree, join clans, chat with players, and challenge rivals in PvP. Every run gives rewards, gear, and new ways to level up your summoner.

Summon, evolve, and progress
Start with simple slime allies and keep summoning as each age opens new power. Upgrade the summoning altar, unlock stronger slime forms, and push through ancient worlds, medieval battles, futuristic lands, space realms, and the Quantum Age. Each summon adds progress, each evolution matters, and each upgrade helps your team evolve against stronger enemies. Keep evolving to turn basic slimes into stronger fighters.

Fight idle RPG battles
Your slimes keep fighting while you focus on smart upgrades. Improve attack power, defense, survival, and battle speed to defeat enemies and move deeper through each stage. Choose when to level up, when to unlock bonuses, and when to evolve your strategy for harder combat.

Clear dungeons for rewards
Enter dungeons, use dungeon keys, and fight special challenges for loot, gear, items, gold, gems, and upgrade materials. Dungeon battles give you another path to grow stronger beyond the main stages. Clear more dungeons to support your slime army and prepare for bigger fights.

Collect gear and summon items
Summon items, equip powerful gear, compare stats, and improve your build with boots, armor, weapons, accessories, artifacts, and rare loot. Better equipment gives your summoner and slimes more power in every battle.

Upgrade your tech tree
Build long-term progression through the tech tree. Unlock passive bonuses, improve summon power, boost idle rewards, and strengthen your team with permanent upgrades. The right upgrade path can make every slime, item, and dungeon run more valuable.

Join clans, chat, and fight PvP
Create a clan, join a clan war, talk in global chat, use clan chat, and challenge other players in PvP battles. Use chat to find rivals, test your build in PvP mode, start a PvP challenge, enter a PvP battle, chat before fights, and grow with other summoners while your slime army keeps getting stronger. Evolve with every age.

Why play Summon Master?

* Slime idle RPG progression
* Summon slimes and evolve through ages
* Idle battles, combat upgrades, and auto battle gameplay
* Dungeons, dungeon keys, loot, and rewards
* Gear, equipment, items, and rare upgrades
* Tech tree, level up systems, and passive bonuses
* Clans, clan war, global chat, clan chat, PvP mode, and PvP challenges
* Companions, summoner upgrades, chat fight features, and no forced ads

Summon your slimes, upgrade your power, clear dungeons, join clans, fight PvP, evolve your army, and become the master of every age.
Updated on
Jul 5, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity, App info and performance, and Device or other IDs
This app may collect these data types
App activity, App info and performance, and Device or other IDs
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

3.8
20 reviews
Timothy W
June 14, 2026
This has the same bones as many of the wave based summon games, but it's got hand drawn charm, and it goes alright. I think the asking-for-money happens a little quickly, and also, the prices are a bit steep, which may impact how popular the game gets, especially with many like it on the app store for less money and more polish. It's a bit of fun. Unfinished Edit: Rankings are broken with one person (Dev or cheater) maxed out. Entire PvP feature ruined. Lost stars until fixed. Unfinished game.
Did you find this helpful?
Zygle Games
June 14, 2026
Hey Timothy, thanks for the detailed review! We're working hard to make the game more polished with every update. We checked the Challenge leaderboard and everything is working correctly .the top player is simply very powerful and wins all 5 daily battles. Our team don't participate in rankings.
Jason Galon
May 12, 2026
The percentage of the weapon to summon especially in higher rank is too low and the game is too slow and can't even use the skill buff for 10 sec. because it walks so slow.
Did you find this helpful?
Zygle Games
May 12, 2026
Hey Jason, thanks for the feedback 🙌 Higher-rank items are meant to be harder to get, but you can improve your chances by upgrading your summon cauldron. in next update speed and summon balance will change. after update you can feel better. thanks
Toine van Sprundel
April 29, 2026
very bugged as of now. 1. cant go to the settings in my profile to contact support. 2. real time wont be updated until you close the app and reopen it again. 3. my rare green egg dissapeared on me some how. 4. egg hatching bug when you hatch a egg, close the app and reopen it it will be finished immediately
Did you find this helpful?
Zygle Games
May 2, 2026
Hey Toine, really sorry about all this , that’s definitely not the experience we want. Thanks a lot for taking the time to list everything out, that actually helps us a ton. We’re already working on fixes for these and they should be addressed in version 0.0.3.5. Appreciate you sticking with us 🙌

What’s new

- Reworked all game art
- Reworked the entire UI
- Improved PvP experience
- Fixed challenge reward issues
- Fixed UI bugs