Re:Birth Online

VS

Roblox

Re:Birth Online is a lesser-known action fantasy RPG released in 2020 by CaretGames. As a PC open-world RPG, it likely launched with modest expectations and hasn't maintained major visibility since release. Its age (4 years) and lack of widespread recognition suggest a small, niche but persistent player base typical of indie MMORPGs. There is no indication of major publisher support or ongoing expansions that would drive significant numbers higher.

Roblox is a massively popular sandbox platform, released in 2006 but continually updated and widely adopted by younger audiences globally. It consistently reports tens of millions of monthly active users, with peak daily actives usually around 5–10% of monthly users. Recent filings and reports indicate Roblox has over 60 million daily active users, but this covers global user logins across many devices and experiences. Adjusting conservatively for reporting and engagement variance, daily actives typically exceed 50 million worldwide, but simultaneous users generally peak in the hundreds of thousands to low millions. As a platform with persistent worlds, it fits the broader MMO definition.