Mate to mint an NFT, say a picture, you need like 50 to 150 kWh, and it takes around 5 minutes (sources vary i used 2 first links of google), now say the game has textures, models or sprites, music, levels and the code itself. Unless your game can fit on a nes cartridge, or you are making it for PICO-8 or some shit, you are going to waste from half to full day and shitton of power to just get it on blockchain, and thats because the size here actually matters. The issue also rises when you introduce Daves cool "SAVE/CHARACTER SHEET SHARING" where the PLAYER will need to mint his own nft of his save to share it with someone else, which costs somewhere from 50-100$ dollars.
I think its retarded.