レトロゲームエイリアンズ

Before you know it, you find you're wandering in a residential area in the middle of the night again... Insomnia is rough on a middle-aged man like you. But this is the first time you've come across a girl on the street who is concentrating hard on a game she's playing on a handheld console.
"Hey, could you clear this game for me?"
The girl's sudden request throws you for a second, but you can't pass up the chance to have a "reunion" with the retro games you used to play when you were young. So you take the game console...

Three "in-game games"
Play three click-and-choose adventure games in any order, which appear to be remakes of games released for Japanese PC in the 1980s and boast the same odd plot developments that retro games are known for. The graphics of each "in-game game" feature pixel resolutions and limited colors that are faithful to the performance of PCs of the time, partnered with background music (composed by Foilverb) that is as infectious nowadays as it would have been back then.

[From Steam]