There are some strange design choices that make it a bit frustrating even in the early game, including:
- RNG-based progression where you could a long time mining and not discovering new species, or getting close to uncovering them only to run out of energy
- Dramatic "presentation" for the species that have already been discovered, slowing down the flow of gameplay
- No way to quickly replay after the level end screen; you HAVE to go to the dex / home
- No indication of how many fossils are in the current mine (total and remaining); especially egregious since this is clearly inspired by Pokemon / Pokeclicker