Single-player games like Idle Monster TD
Below are 8 single-player Steam games similar to Idle Monster TD, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Idle Monster TD page.
Ranked picks
- 1
Idle Monster TD: Evolved
Single-player alternative to Idle Monster TD — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD.
Evolve epic monsters and crush puny humans in this endless idle tower defense game! Unlock, upgrade, and evolve over 150 unique monsters and pets, ranging from cute and colorful flower creatures to epic fire breathing dragons, to assemble the ultimate team against the endless waves of enemies.
- 2
Idle TD: Heroes vs Zombies
Single-player alternative to Idle Monster TD — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD.
An endless Tower Defense game of epic heroes vs evil zombies. Unlock and upgrade countless Heroes, artifacts, and technologies to defend against the infinite zombie swarms. Strategize the most effective placement of Heroes to synergize their skills and abilities.
- 3
Idle Hero TD - Tower Defense
Single-player alternative to Idle Monster TD — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD.
Endless idle tower defense game full of deep strategy and combat mechanics. Unlock and upgrade dozens of epic fantasy heroes to defeat an infinite swarm of enemy monsters. Strategize hero positions, synergies, and skills for an effective defense, then sit back and let the auto-battler do its thing!
- 4
Grow Defense
Single-player alternative to Idle Monster TD — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD.
Upgrade your Castle and Unlock new tiers of Skills and Weapons to Defend vs Monsters and Bosses across VARIOUS ZONES! Find Rare ITEMS dropped from monsters and bosses and upgrade them to their full potential! Defeat RAID Mega-Bosses to find LEGENDARY items!
- 5
Idle Tower Defense
Single-player alternative to Idle Monster TD — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD.
Idle Tower Defense is a game where you control a single tower to fight off hordes of enemies. No randomization. Choose from a variety of modules to create unique builds and upgrade modules and survive endless waves.
- 6
Zero Stress King: Idle Defense
Single-player alternative to Idle Monster TD — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD.
A short relaxing incremental game disguised as a tower defense, but enemies can’t reach your walls. Thanks to lava.
- 7
Monster Tiles TD: Tower Wars
Single-player alternative to Idle Monster TD — playable solo, no multiplayer required. Shares Strategy and Indie with Idle Monster TD.
Free Tower Defense game with unique roguelike elements. Custom base building mechanics allow you to create your own base and maze with tiles earned after each wave. Unleash a variety of monsters, each with its own evolution path and unique skills, and evolve them into legendary creatures.
- 8
Idle Pixel Fantasy
Single-player alternative to Idle Monster TD — playable solo, no multiplayer required. Shares Indie and Free To Play with Idle Monster TD.
Recruit hard-working helpers and magical creatures that automatically collect gold and crystals. Unlock new levels, invest in stronger units, and work your way up to the powerful dragon boss at the top. A relaxing pixel-style idle clicker!