How they compare
Harem Hotel is an adult visual novel and dating sim: you inherit your grandfather's hotel, staffed entirely by women, and build relationships with 18 characters whose stories your choices shape. It has more than 14,000 images and 560 events, animated and uncensored, and is rated 4.8 of 5 by over 7,000 players on itch.io.
Hentai Heroes is a free-to-play browser game from Kinkoid, running since 2016: you collect hentai heroines through a comedic, parody-heavy story, with in-game purchases to speed things up.
Harem Hotel is the deeper game, with real characters and storylines; Hentai Heroes is quicker, lighter and free.