I just added Kryštof Klestil's Blind Faith (which is being made entirely with F/OSS tools) onto my list of games developed on #Linux! If you know of anything that's not here but should be, let me know!
https://docs.google.com/spreadsheets/d/11C1h0EjekxoXOlM-_z0quBRimhURITLb_wNOIyoNTkM/edit?usp=sharing