Circles TD 1:

Circles TD1 or CTD1 was the first game in the series.

it introduced the core mechanics of the series and introdued all

the enemies and turrets that are now in every game. It was first released

on scratch but was later uploaded to itch.io.

Try the web version here

Circles TD 2:

Circles TD2 or CTD2 was the second game in the series.

it added more stuff like boss events and a decor store.

itg also added more stuff like events and was updated very frequently.

it was first released on gamejolt but was taken down but can still be downladed on itch.io (there is no web version because we lost the source code).

Circles TD 3 (Beta):

Circles TD is the third installment in the CTD series.

it still is in development and will be released someday.

its gonna be the most advance game yet and will probably be paid for.

you can play the beta here.