# 3.1 Game Basics

1. Metarun is a blockchain-based free-to-play and play-to-earn endless runner game with PVE and PVP modes. The player can play as a free starter or purchasable characters of different classes to earn in-game currency for
   * Acquiring new game entities. 
   * Improvement of existing game entities. 
   * Conversion to $MRUN token.
2. All game entities can be sold to other players on the external market in the form of NFT. Players can use all acquired entities;
   * To increase their value and trade on the foreign market. 
   * To increase the earning rate of $MRUN tokens. 
   * Collecting. 
   * Upgrade Characters.
3. The game's economy is based on the in-game OPAL, which you earn by participating in matches and tournaments and earning ranked awards. You can exchange your earned OPAL or use them to buy a Common or Epic Metarun chest; furthermore, $MRUN can be used to upgrade heroes and stake; additionally, you can use $MRUN to purchase a limited edition super Metarun chest.