Gather more coins to upgrade robots, coins, etc.

This is an early stage of development for this game.

Your feedback can make the game richer.

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v0.1.0b - fixed a bug where the effect of an artifact would remain in the session after a hard reset(Thanks to @qwerty741).

v0.1.0 - added achivement menu, and newgrounds achievement support!

v0.0.9a - added 2 more artifacts & fixed a bug where players could accidentally purchase artifacts they already owned

v0.0.9 update

• added 4 artifacts
• added artifact coin. You will get 2 artifact coins when you purchase "progression" upgrade.
• added ruby(x33 coin).

v0.0.8 update

• added hard reset button(in settings menu).

v0.0.7 update

• added a new setting menu and an option to turn off number pop-ups to improve performance.
• ​added offline bonus. You will get [offline seconds (max 1 day)+1] * 10% * [drop value] * ([progression multiplier] ** [progression count]) coin.
• added statistics.

v0.0.6 update

• Added probability upgrade to find red robots. Red robots are twice as fast as normal robots.
• Added gold panel upgrade. Receive a bonus when the robot touches two different panels.
• Increased the maximum value for the drop value upgrade from 41 to 81.
• Decreased the progression cost multiplier from 100 to 33.

v0.0.5 - added emerald(x6 coin) & sapphire(x12 coin)

v0.0.4 - fixed spawning new robot bug. If the board is not in a state where robots can be spawned, the robots will be queued up and respawned on the board when they are available.

v0.0.3 - fixed coin spawn bug, added the effect when a coin is added by a robot.

v0.0.2 - added "progression" upgrade.

v0.0.1f - "robot count" upgrade cost multiplier decreased from x12 to x2.75.

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robot graphic asset from "Redshrike and KrizEvil" from opengameart.org

menu icon from https://itch.io/profile/bdragon1727 's https://bdragon1727.itch.io/pixel-ui-button-icon-platformer

artifact icon from @SciGho's https://ninjikin.itch.io/treasure