Free games like Cartridge Defense
Below are 8 free-to-play Steam games similar to Cartridge Defense, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Cartridge Defense page.
Ranked picks
- 1
Mythgard
Free-to-play alternative to Cartridge Defense — no purchase or trial window. Shares Casual and Indie with Cartridge Defense.
Welcome to Mythgard, a fantasy cyberpunk CCG of heroes, gods, and mythical beasts. Master the unique lane and mana systems in your rise to the top or enjoy team play with a friend. New players can use the code WelcomeChallenger to get 20 free packs and more to start their journey.
- 2
Star Realms
Free-to-play alternative to Cartridge Defense — no purchase or trial window. Shares Strategy with Cartridge Defense.
Star Realms is a hugely popular space combat deckbuilding game. Download and play today (note: base set is required to play online) to find out why Star Realms is the winner of SXSW 2014 Board Game of the Year, 7 Golden Geek Awards from BoardGameGeek, and 2 Dice Tower awards!
- 3
Die in the Dungeon: Origins
Free-to-play alternative to Cartridge Defense — no purchase or trial window. Shares Strategy and Indie with Cartridge Defense.
Fight your way through a mysterious dungeon in this deck-building, turn-based roguelike game where you don't use cards, but DICE! Deal with enemies by combining dice on your board, boost their effects with magical relics, and discover the story behind Die in the Dungeon!
- 4
KARDS - The WW2 Card Game
Free-to-play alternative to Cartridge Defense — no purchase or trial window. Shares Strategy and Indie with Cartridge Defense.
KARDS, The World War II Card Game, combines traditional CCG gameplay with innovative mechanics inspired by classic strategy games and real battlefield tactics. Take command and challenge other players in grand-scale warfare on the ground, air, or seas.
- 5
Minion Masters
Free-to-play alternative to Cartridge Defense — no purchase or trial window. Shares Strategy and Indie with Cartridge Defense.
An addictive fast-paced hybrid of Card games & Tower-Defense. Play 1v1 - or bring a friend for 2v2 - and engage in epic online multiplayer battles full of innovative strategy and awesome plays! Collect 200+ cards with unique mechanics, all free!
- 6
Infinitode 2 - Infinite Tower Defense
Free-to-play alternative to Cartridge Defense — no purchase or trial window. Shares Indie and Strategy with Cartridge Defense.
Infinitode 2 - a strategy in the Tower Defense genre, in which the player will have to build towers to protect his base from endless waves of enemies. The game features huge maps, lots of towers, resource miners, upgrade tree and map editor.
- 7
GWENT: The Witcher Card Game
Free-to-play alternative to Cartridge Defense — no purchase or trial window. Shares Strategy with Cartridge Defense.
Command mighty Witcher-world heroes in epic online PvP card battles!
- 8
Morimens
Free-to-play alternative to Cartridge Defense — no purchase or trial window. Shares Strategy with Cartridge Defense.
Morimens is a roguelite card-building game inspired by the Cthulhu mythos, where you craft a versatile and intricate deck tailored to your playstyle. The choice is yours to embark on a climb up treacherous towers or engage in tactical battles. Explore misty maps and uncover the truth of the world.