Publisher: Simage

Simage was a small company in Novato, California, that published an educational cartridge for the Atari 2600. The site has one game from them: Eli’s Ladder, a set of counting, addition and subtraction drills for young children. Each right answer helps Eli, a friendly alien, climb a ladder into his spaceship. The cartridge was sold by mail order, came with an award chart and stickers for parents, and is one of the rarest 2600 cartridges today.
Give Eli a hand and play it below in your browser.