Any other good options similar to this size?
Five with comparable sizes:
Apocalypse, Battle of the Bulges, Morning lust. Anything by EpicLust / Tim Donnehy. Very highly recommended if you're into giga tits meeting giga schlongs. Some limited BE/growth. Good replayability.
Terminal Desires is a great sex-zombie apocalypse game with truly enormous boobs, booty, schlongs, preggo, breast and butt expansion, etc. It rivals or exceeds this one for breast size and is a better, though different, game overall with replayable scenes.
Dungeon Slaves is a great game with truly huge boobs, BE, mega-schlongs, etc. though few boobs of quite this size (ie. nearly immobilizing), but still enormous. Also has good replayability. Has some of the most charming and gorgeous models and is probably an overlooked game here.
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Four without giga-boobs but still very good games with some appearances by unrealistically large or expanding breasts.
Hypnosis & Endowed ... Expanding Universe's Hypnosis is a great HS VN without anything nearly this size but which does specifically include BE, PE, butt growth, and general sexual enhancement. In fact his games are entirely built around it. He's hoping to corner the market on "realistic" BE games I think. He's slowed production on Hypnosis to produce "Endowed", which is turning out to be an even better game. Made in HS. Really great writing.
Harem Hotel. Also HS. Has one sexable side character with boobs on this level, and another main sexable character with resizable boobs (small, medium, extra large).
Thirsty For My Guest is a great VN, and although the sexable sizes (so far) aren't anywhere near as big as here, there are still a few guest teaser models that are as big or almost as big.
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Four text-based games with this kind of content.
Lilith's Throne
Trials in Tainted Space
Contest of Champions (I & II)