The Astro City Mini is a functional miniature version of the full-sized arcade cabinet that goes by the same name, and it includes 37 playable games.
The Mini features a built-in LCD screen, but if you’re interested in the bigger picture, it also includes an HDMI-out port, a headphone jack, and two USB-A ports.
Wildfire is a multi-player electronic pinball game released by Parker Brothers in 1979 that "plays and sounds like the real thing" (that's what it says on the box) but in an innovative portable format.
The Incredible Hulk Escapes is a simple handheld game mostly based on random luck. The player presses a button to which different lights will light up leading to different scores. The scores need to be counted up manually and added to the score wheel while the Hulk climbs higher and higher. The game can be played with two players.