What does the pickaxe upgrade do?

• Improves your mining speed slightly.

What does the backpack upgrade do?

• Increases your backpack slots by one.

What are the possible variants that can spawn?

Currently Available:

• 1x1, 1x2, 1x3, 2x2, 2x3, 3x3, T-shape, L-shape, O-shape

Planned:

• Maybe more interesting shapes, more "types" of each variant

Possible Rooms for Variants

1x1:

• tons_of_rocks, tons_of_trees, pond, ore_deposit, nests, oil

1x2:

• tons_of_rocks, tons_of_trees, pond, ore_deposit, nests

1x3:

• tons_of_rocks, tons_of_trees, ore_deposit_with_enemies

2x2:

• tons_of_rocks

2x3:

• tons_of_rocks

3x3:

• tons_of_rocks, uranium_wasteland

My oil doesn't spawn frequently later on, why?

• Oil doesn't spawn frequently later on because as you explore more rooms, more variants become available, decreasing the chance of spawning a 1x1 room. Only on this tile can oil appear. You can manipulate room spawns by strategically exploring to leave empty chunks where only 1x1 rooms can fit.

Room Placement and Generation

• The room placement and generation follow a simple principle for each variant:
• Each variant has several parameters:
  • Weight: Increasing weight increases the chance of the variant being used.
  • Min Discovered Rooms: The minimum number of total discovered variants required for the variant to be available.
  • Max Discovered Rooms: The maximum number of total discovered variants allowed for the variant to be available (or 0 for unlimited).
  • Guaranteed at: Levels at which the variant is guaranteed to be used, considering the direction of exploration.
• From the chosen variant, a proper room is selected based on the following parameters:
  • Weight: Increasing weight increases the chance of the room variant being used.
  • Min Discovered Rooms: The minimum number of total discovered rooms of the given variant required for the room to be available.
  • Max Discovered Rooms: The maximum number of total discovered rooms of the given variant allowed for the room to be available (or 0 for unlimited).
  • Guaranteed at: Levels at which the room variant is guaranteed to be used.

More variants to be implemented, suggestions and value tweaks are welcome.