IMHO.

That Which Was Lost vs 虚灯のセレスティア

That Which Was Lost and 虚灯のセレスティア both land in Indie, RPG on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both share Indie, RPG on Steam. That Which Was Lost (2022) is 2 years older than 虚灯のセレスティア (2024). 虚灯のセレスティア is currently ~0% cheaper on Steam than That Which Was Lost (9.99 USD vs. 9.99 USD). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.

Side-by-side comparison

That Which Was Lost vs 虚灯のセレスティア — Steam metadata comparison
That Which Was Lost — Steam game coverThat Which Was Lost虚灯のセレスティア — Steam game cover虚灯のセレスティア
Released20222024
GenresIndie, RPGIndie, RPG
PlatformsWindowsWindows
Steam DeckUnratedUnrated
Price9.99 USD9.99 USD
Steam reviews3 reviews
MultiplayerSingle-player onlySingle-player only
DevelopersAnima Games構想コード:D

Side by side

That Which Was Lost vs 虚灯のセレスティア — FAQ

Should I play That Which Was Lost or 虚灯のセレスティア first?
If you want chronology, That Which Was Lost (2022) came out before 虚灯のセレスティア (2024). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
Are That Which Was Lost and 虚灯のセレスティア similar?
They overlap on Indie, RPG on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.