I'm curious about your creations

[iancampbell]

How exotic do you want? As an example, life with opposite chirality to Earthly life would usually be considered exotic. Likewise, to some extent, life that uses DNA just like us but using different bases or with a different genetic code. There are dozens of purine and pyrimidine compounds like our bases, after all, and the genetic code is (as far as can be seen) completely arbitrary.