: Multiple small "files" (past runs) can be merged into a "Solid Archive," which permanently unlocks a new artifact or a "Hero" character inspired by those collective past attempts.

: In your next run, you can find a rare "Decompressor" tower or altar. Activating it releases the stored power from your previous run as a temporary, high-powered spectral unit or a sudden burst of upgrades.

Are you building a game, or were you looking for a feature for a file management application? rar - ArchWiki