Wow, what an a$$hole! I have a problem with a clepto-sibling myself and became estranged with her (again) after she stole my ratchet set out of my car and other issues prior to that that I won't go into, etc. I had replaced the brake shoes for a neighbor's car, fixed the parking brake too, and he had come to me again for a tune up to replace the spark plugs. So I went to my car to find my ratchet set, but I couldn't find it! I spent like a half hour tearing it apart trying to find the damn thing! Then I remembered I had given the clepto my keys the day before or so when she asked me to find something in it. I should've walked with her to make sure, but I mistakenly showed her trust. Sure enough, I drove to her house, she denied it all, but by the end of it, with her own stupidity and absent-mindedness, I discovered where she had hidden it! She tried to grab it back from my hands, but I wouldn't let go and she went all f*cking psycho! That was ~2 years ago maybe, I dunno, but I ain't talked to her since and don't plan to again either!
I say press charges if you can! Don't let him get away with it! Know that if you didn't actually see him steal the games (as a witness) and there's no, say, security video of him doing it, and if he denies it entirely to the police, they wouldn't be able to arrest him... He has to self-incriminate. So, pffft, in actuality, you probably couldn't get an arrest even if you really wanted to... Anyhow, that shit just pisses me off. To get set back like that by someone in your own family, bad enough if you got broken into by strangers who could give a f*ck, but that it's your own brother and you were the one that let him in, etc...