idbeholdME: How does this not have Psychonauts in it, we'll never know.
Sure we know. Because that's
never how GOG game sales work; they never randomly put every game that could fit into a sale theme into any particular sale; rather, only specific games that are specifically negotiated to appear in a particular sale can or will do so, which will always exclude many games that could fit into a sale theme but yet don't appear in that same sale since there were no agreed upon contracts for that.
Also, the Psychonauts devs love to treat GOG customers like second-class citizens by not giving GOG customers feature parity including Achievements as compared versus other store's versions of their same games that have more features, so good that their games aren't on sale. GOG shouldn't even sell their games at all, period, until if & when such time comes as they choose to give their GOG games feature parity.