I absolutely LOVED these games. They are probably my favorite VNs that I've finished, though they are really VN + puzzles. The characters are generally great imo and they're very queer friendly games. I personally like the humor, but it's extremely horny (the humor, the game is SFW) just as a warning, since that might rub some people the wrong way. The anime Punch Line was also by Uchikoshi and shares some of the same themes (scifi, identity/reality-bending, queer-friendly, extremely horny jokes), so if anyone here has seen that I'd say there are a lot of similarities, though I like the Somnium Files games better.