The year 2021 was a landmark for Re-Logic and its creator Andrew "Redigit" Spinks. While the massive Journey's End (1.4.0.1) update had launched in 2020, 2021 saw the game expand across almost every modern platform:

: The Internet Archive hosts unique versions like Terraria PSP , a fan-made homebrew game for the PlayStation Portable published in 2021.

: Terraria officially arrived on Google Stadia in March 2021.

: In May 2021, the 1.4.2.3 patch introduced the "Celebrationmk10" secret world seed to commemorate a decade of the game.

Preservation efforts on Archive.org specifically targeting 2021 content often focus on two areas: