Someone wrote "CLAY" on the front as pictured. But it works.

The product is an NHL All-Star Hockey 95 Sega Genesis cartridge, released in 1995 by SEGA. It belongs to the Sports genre, specifically the Hockey sub-genre. The game is part of the NHL All-Star Hockey Series and has a Kids to Adults rating. This NTSC-U/C (US/Canada) region cartridge is a single unit, featuring the classic hockey gameplay that Sega Genesis is known for.