Strongholds
Rule book: PDF
A multiplayer tactical card game played using a standard deck with two main phases - besieging enemy strongholds and defending against oncoming attacks.
Conceived and developed most of the rules over a late afternoon together with my girlfriend at the time. Main motivation was to come up with an original card game, without basing it off of any pre-existing games (which was the case with Regicide).
Plays a bit more tactically and less strategically than Regicide, owning to the lack of a persistent board. This makes for a more light-hearted, but still relatively intense game.