Warhammer 40,000: Space Wolf is a free-to-play turn-based tactics game with strong CCG elements set in the Warhammer 40,000 universe. Weapons, items and skills during battle are represented by cards.
There are three game modes: single-player campaign divided up by missions, online multiplayer battles player versus player and survival mode, where the player must defeat waves of enemies.
Between missions it is possible to combine two same cards to get more powerful variants of that card, forge new card for special resources or destroy cards to get extra resources. Player scan unlock new abilities for characters and customize their equipment between missions as well.
The later released Windows version removed micro-transactions and made some related changes, e.g. regarding difficulty balance and additional items.