How to get the plane

1. The numbers represent alphabets, where A is 1, B is 2 and so on.
2. Take the letter's position in the alphabet, add 8 and take that letter instead. (A becomes I, Y becomes G and so on)
3. Type in the code, but shift your hands one key to the left. (Instead of O, press I and so on. Only works on qwerty keyboard though.)
4. It's a base64-encoded string, use a base64-decoder for that.

First answer:

master branch

Second answer:

there is a treasure hidden somewhere, it is located at a secret place in the pacific ocean

Third answer:

in a world full of blocks

Fourth answer:

the plant is famous because of the ability to cure some diseases

Both of these skills can be used during combat with a cooldown:

• Thunder Bolt deals a set amount of damage based on the skill level (starting at 20, +7 damage per level) with a cooldown of 20 seconds.
• Invulnerability makes you immune to all damage for a set amount of time based on the skill level (starting at 3 seconds, +3 seconds per level) with a cooldown of 30 seconds.

You can upgrade your skill after choosing it for a gold cost. Each upgrade costs 500*skillLevel*skillLevel+500 gold bars, with no ceiling on the skill level.