Spellweaver is a free-to-play online digital trading card game (TCG).

Players may build a deck of heroes, creatures, and skills across six different realms of magic. Two unique mechanics in deck building and combat involve a hero skill mechanic, allowing players to enhance their hero by the use of skill cards, and a creature speed mechanic, making some units strong but slow while others hit fast but light. Players can also counterattack to defend or protect units.

Spellweaver features multiplayer matches including regular tournaments and custom matches with alternate win conditions. In addition to multiplayer matches, Spellweaver offers two single-player campaigns. The developers promise regular free updates to keep the game fresh.