Games like Idle Monster Slayer

"Idle Monster TD" is a tower defense game where you protect monsters from robot invaders as the commander of the United Monsters Alliance. Strategically place allies and use spells to strengthen defenses and increase power, speed, and other stats. The game rewards upgrades and unlocks new creatures the more bots are obliterated, and continues to generate rewards even when you're away.

Loafing Town is a relaxing idle game where you oversee and develop a hero village from a single hut to a bustling town. Summon monsters to train heroes, earn gold to upgrade facilities, and use magic or sacrifices to gain rewards. Its physics-based interactions and god-view provide a charming, laid-back sandbox experience perfect for casual play.

Tower Lords is an incremental building and strategy game where you harness mystical light to build powerful towers and armies, freeing souls from the Dark Lord’s control. Command elves, dwarves, mages, and more to survive relentless waves of titans while upgrading your forces and structures. Challenge the Dark Lord across six lands and reclaim the world’s fate.

"Idle Champions of the Forgotten Realms" is a free-to-play strategy game based on the Dungeons & Dragons multiverse. Unlock and collect iconic Champions from various D&D sources and master their abilities to complete adventures in famous D&D locations. The game features regular content updates including new Champions, adventures, and events.

"Cursed Treasure 2" is a tower defense game where players protect their cursed treasures from hero raids across various stages. Place tactical towers and utilize spells to thwart enemies' progress, ensuring the riches remain secure. The game features upgrades, new tower types, and a challenging experience for strategy enthusiasts.

The adventure of the Lonely Knight begins. Lonely Knight is a game that combines idle and roguelike elements. Defeat monsters and search for companions for the lonely knight. Grow while idle and test your strength in dungeons! Embark on an Adventure! Lonely Knight features 7 fields, 3 event fields, 28 levels of difficulty, and an infinite dungeon waiting for you. Strategic Roguelike with …

Last Hit Titan is a cooperative tower defense game where players face massive Titans traveling from player to player. Strategically build and upgrade defenses to weaken these colossal foes, with the final blow rewarding powerful loot to enhance your towers. Merge and equip towers acquired through a unique loot system to survive endless waves of ever-stronger Titans.

"Grow Defense" is a tower defense game where players upgrade and defend their castle against hordes of monsters and bosses, earning items and power gems to increase their power and progress through progressively harder zones. A rebirth system allows players to unlock unique and permanent upgrades using rebirth tokens. Unlock and upgrade different tiers of skills and weapons, and see how far you can go!

Years after Prince Lu’s rebellion, the Crown Prince of Dragon Court has been mysteriously kidnapped. Dragon Cliff is an RPG/Town Management game. Players are to recruit adventurers, kill monsters, hunt treasures, craft armories, accommodate residents, upgrade town facilities and finally reveal the great mystic behind the Dragon Emperor.

Summoners Greed: Knight Legend is a strategy game with an intriguing story and wholesome themes. Its outstanding gameplay, wonderful graphics, and perfect soundtrack make it enjoyable, but the high level of grinding and frequent ads can be disruptive. Fans of RPG tower defense and monster legends games, such as Summoners War and Soul Knight, will find familiar elements in this idle TD RPG. However, be prepared for some bugs and glitches.