Battle Isle 2020 supports the entire range of functions of Battle Isle 2 with the exception of the three-dimensional representation of the battle sequences. In addition to that, Battle Isle 2020 includes many new features:

• Usage of the entire screen at any resolution
• Map zoom
  
• Simplified operation with mouse
  
• Background music in MP3 / OGG format
  
• Speech output for all in-game messages
  
• Language can be switched any time between German and English
  
• Multiplayer mode via LAN and internet
  
• New singleplayer campaign with more than 20 maps
  
• New multiplayer campaign with more than 20 maps
  
• Secret missions (bonus maps that become accessible when fulfilling a secret mission objective)
  
• Difficulty mode depending number of units
  
• Improved AI
  • The AI simulates all possible combat situations and selects the fight with the best result for itself. This means that in case of doubt, the AI will also attack with a ranged combat unit in close combat in order to cause higher damage calculations by clamping or to completely destroy an opponent if the ranged combat damage would not be sufficient due to the ballistic penalty. Also, due to the simulation, the AI does not carry out any battles that would end with the destruction of its own unit.
  • The AI does not occupy any empty shops that its opponent could conquer back in the same turn causing the AI to lose the shops and the infantry used to occupy the shops.
  • In its shops, the AI first produces the units it needs most; then the strongest units from the production range.
  • The AI's turns take significantly less time than in Battle Isle 2.
• Revised difficulty modes
  • Easy mode: Shared vision with allies, additional units for the human player (only in the new singleplayer campaign), map summary screen shows number of enemy units as well as resources available to enemies, the AI skips some tactical considerations.
  • Normal mode: Shared vision with allies, map summary screen hides enemy units and resources.
  • Hard mode: Shared vision with allies, additional units for the enemy AI (only in the new singleplayer campaign), map summary screen hides enemy units and resources, the AI uses additional tactical functions.

Battle Isle 2020 includes a server-based multiplayer mode. This allows players to play at the same time as in modern online strategy games (in contrast to Battle Isle 2, where a savegame had to be passed on from the active player to the next player after each move). The Battle Isle 2020 multiplayer mode supports all multiplayer maps of Battle Isle 2 as well as the multiplayer campaign (team mode) included in Battle Isle 2020 as well as all maps with multiple human players built with the map editor. Human players on the same team make their moves at the same time. Human players who are not in the active team receive updates on the map in real time through the actions of their opponents.

Multiplayer games can be started easily and teams can be arranged via the multiplayer lobby. The lobby lists all available games along with the players who have already joined the game. A game starts automatically as soon as the required number of human players has joined.

During the game, players can exchange chat messages with each other, which they can either send to their team or to all players. As in single player mode, the game can be saved at any time in multiplayer mode. The player who created the savegame can then reload it and enter the multiplayer lobby.

In addition to the normal campaign and Titan's Legagy (if installed), Battle Isle 2020 includes a completely new campaign entitled "Kitana's Castle". The campaign plays parallel to the events of the original Battle Isle 2 campaign and uses the features added with Battle Isle 2020.

By using the included map editor, you can create your own maps for Battle Isle 2020 and Battle Isle 2. The map editor allows changing all map details as well as creating completely new maps.

Custom maps for Battle Isle 2020 can contain your own mission descriptions and game messages, which are spoken automatically by the integrated voice output of the game. Furthermore, own maps can use all units of Battle Isle 2 and Titan's Legagy. In addition to singleplayer maps, the mission editor can also be used to create multiplayer maps for both cooperative play and games against human players.