Billy Bonecrusher app for iPhone and iPad

As you explore the app you’ll encounter a collection of extraordinary beasts that lived here not so long ago but are now - for a variety of reasons - all gone.

Through the magic of animation you can bring them back to life and listen to the stories they have to tell about them and their world - and us and ours.

Wrth i chi anturio drwy’r ap byddwch yn dod ar draws casgliad o anifeiliaid rhyfeddol a arferai trigo yma, heb fod yn amser maith yn ôl, ond sydd am resymau amrywiol wedi hen ddiflannu erbyn hyn.

Medrwch chi eu hadfywio drwy hud a lledrith animeiddio a gwrando ar y straeon sydd ganddynt i’w hadrodd ynglŷn â’u hunain a’u byd – a ninnau a’n byd ninnau.