Regular Show: The Lost Tapes appears to have 40 episodes total , with 10 episodes released at launch and the rest rolling out afterward.

Episode count

  • Total series episode count: 40.
  • Launch-day episodes: 10.
  • Some listings also reflect the season page as 18 episodes at one point, which likely means the catalog was still being updated.

Quick note

There’s some mixed info online because episode listings were changing as the show rolled out, but the clearest published count points to 40 total episodes.

TL;DR: 40 episodes total.