Board Thread:Questions and Answers/@comment-25523075-20160222185028/@comment-32398816-20160823045453

Tent2 wrote: "But you can on BTD4."

Since MochiGames closed the track creator of BTD4 stopped working. Just before early-mid-2014, after BTD4 and SAS3 currency changed to NK Coins, BTD4 Track Editor is free.