As long as you have either the classic coding blocks from Coding Awbie and Coding Jam or you have purchased the new Coding Family Bundle, you will be able to play Coding Duo.

The Coding Duo app has been updated effective August 2020 so that you will no longer need to use the Coding Duo character blocks in order to play the game. Once you update the game/app, you will be able to play the game without the two Coding Duo character blocks from this point forward.

For reference, we have written game instructions in PDF format here:

https://assets.playosmo.com/static/downloads/GettingStartedWithOsmoCodingDuo.pdf