hi dillon! this is weird hmm... i thiiiink you should be alright but maybe your version of lion is not compatible with some of the gfx stuff we do? hmm... is there any way you could get a unity player log from us? if you cmd+space then type "console" you'll see a unity folder in there like this: https://cl.ly/3m0L3r1M2531 if you could grab Player.log and email us (hello@tumbleseedgame.com) that'd be a huge help.
thanks!