Below is a list of the scenarios that are either live (available for play) or in the design stage, soon to be released. The incredible thing is that pretty much EVERY time period has been covered, meaning we could play consecutive games dating from the birth of the BattleMech right through to the current BattleTech timeline...
Year Scenario Name - Status
2525 Davion Civil War - In development
2550 Age of War - Live
2596 Star League: Genesis - Live
2766 Star League: Requiem (large scale map) - In development
2786 First Succession War (original boxed game) - Live
2830 Second Succession War - Live
2866 Third Succession War - In development
3014 Marik Civil War - In development
3026 Fourth Succession War Advanced (large scale map) - Testing
3028 Fourth Succession War (original boxed game) - Live
3048 Operation Revival (enahanced map) - Testing
3052 Clan Invasion - Live
3052 5th Succession War/Op: Scorpion (AU) - In development
3056 The Federated Commonwealth - Live
3062 FedCom Civil War - In development
3067 The Jihad - In development
3071 The Clans: Wars of Reaving - In development
3085 Dawn of the Dark Age - Live
3145 Renaissance - Live
Also in the pipeline are The Clans: Operation Klondike (2821) and various 2-3 player Jihad House scenarios.