||[[U.N. Squadron]]|| 1990 || U.S.Gold || No || Converted by dragon || [[Media:U.N. Squadron.rar | U.N. Squadron.rar]]
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||[[Unpredictaball]]|| 1992 || Video Images || No || Converted by Phantomz<br/>J1B2/J1B1=Pause/Unpause(J1B1 = Resume game, GX4000 Pausebutton =Quitgame. || [[Media:Unpredictaball.rar | Unpredictaball.rar]]
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||[[Untouchables (The)]]|| 1989 || Ocean Software || No || Converted by Phantomz<br/>J1B1=Start, GX4000 Pausebutton =Pause, (X2) to quitPause button = Quit game, any other key tu unpause. J2b1=Skip to resume game)<br/>CHEAT (Level skip): Just press J2b1 while playing || [[Media:Untouchables (The).rar | Untouchables (The).rar]]
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||[[Uridium]]|| 1986 || Hewson Consultants || No || Converted by CraigsBar || [[Media:Uridium.rar | Uridium.rar]]