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2 days ago@MarshReaper replicating the hook of Smash seems unfeasible (your favorite characters smacking each other). Finding libre characters isn’t hard but finding ones to fit the gameplay might - is Tux having tux the main appeal? I would look at what other clones have done and try to replicate them but with a twist.
Maybe the twist could be something to do with it being FOSS. Like you can “read the source” of the opponent, or modify your character’s abilities per match.
@MarshReaper a rock paper scissors approach could be a good choice. If it isn’t a core mechanic then yeah it’s just extra complexity (not worth having to start with).