The Best Modular Terrain For RPGs/D&D? I Absolutely Recommend: Source (with TimeStrike Impressions)

About TimeStrike: Shadow of Fear, from BoardGameGeek:

TimeStrike: Shadow of Fear is a Boss Battle Royale for 2-∞ players. Leave your world behind in this build and battle sci-fantasy adventure as you make your mark across a modular and destructible landscape. Journey through time itself with TimeStrike, a first-of-its-kind boss battle royale and the first of many games designed to be played on the SOURCE system. TimeStrike integrates with SOURCE's modular system to create immersive and destructible worlds for endless replayability. At the end of time, the numberless universes collide. It is here that history ends and your adventure begins. Draft a team of legendary characters to journey across this timescape. Scavenge for lost artifacts, mine the map for materials, complete quests to augment your characters, build fortresses and roads to gain tactical advantages, fight and tame mythical monsters to unlock powerful combinations, go fishing for your next meal, and adapt to an ever changing world - all while battling the other players to be the last team standing. At the center of it all a world boss, and master manipulator of time, seeks to erase you from time itself. You'll compete to control this boss, driven by a deck of unique abilities, and to wield its massively destructive power to control the battlefield and lay waste to your enemies. Defeated players become one with the game and take control of the boss and monsters to exact their revenge on the survivors. Either one player wins, or the game defeats you all. Experience exhilarating battles with your friends as you command a team of legendary characters from ancient civilizations and distant futures to survive the onslaught of the world boss and a map as shifting as the sands of time. -description from the publisher