SAN FRANCISCO, May 1 ― The Frostpunk developer promises free updates and expansions after reaching a first-week sales milestone, BattleTech achieves numerous top five positions, pre-orders for Total War Saga: Thrones of Britannia and Pillars of Eternity II hot up, while surreal short story You Left Me scales the Itch chart.

With over 250,000 copies of post-apocalyptic city-building leadership challenge Frostpunk sold over the April 24 game's first 66 hours, developer 11 Bit Studios responded with plans for expansions and updates.

The game has players assume responsibility for building a city for the remnant of humanity surviving a new ice age. Adding to that is the relatively novel challenge of dealing with community morale and making tough moral choices.

"Yes, we had plans for the expansions and now we're 100% sure we are doing that,” CEO Grzegorz Miechowski said on Twitter, with "many free updates” part of those post-release aspirations.

Rufus Blackwood, 11 Bit's marketing and social media pointman elaborated through an update to the game's Steam store page.

"It is our biggest and most complex game to date [and] it may be our biggest success as well.”

"We have a lot of ideas ourselves and we also listen to our community.”

"We plan to polish some rough edges of the original game,” he wrote. "We also plan to add more modes and scenarios to the game. What are they going to be exactly? It's too early to announce ― but you should be excited.”

Like Frostpunk, BattleTech was another exciting new release from a well respected independent developer.

Having committed US$1 million of its own funding towards the game, studio Harebrained Schemes benefited from a subsequent US$2.7 million crowdfunding campaign in late 2015.

Players take command of squads of aging but powerful walking tanks in a tactical, futuristic sci-fi interplanetary setting.

Following its own April 24 release, BattleTech can be found alongside Frostpunk in the top five charts for Steam, Humble, and GOG.

PlayerUnknown's Battlegrounds maintains its first place position on Steam for the 57th week running.

Steam* (steampowered.com)

1. PlayerUnknown's Battlegrounds

2. Frostpunk

3. Battletech

4. NieR: Automata

5. Far Cry 5

*Steam chart based on revenue rather than units.

Humble Store (humblebundle.com/store)

1. RPG Maker MV

2. Frostpunk

3. Battletech

4. Total War Saga: Thrones of Britannia

5. Far Cry 5

GamersGate EU (gamersgate.com)

1. Frostpunk

2. Injustice 2 Legendary Edition

3. Mortal Kombat XL

4. Pillars of Eternity II: Deadfire Obsidian Edition (pre-order)

5. Marvel Lego Super Heroes 2 Deluxe Edition

Fanatical (fanatical.com)

1. Total War: Thrones of Britannia (pre-order)

2. Battletech

3. Fanatical's Must Play Bundle 3

4. Warhammer: Vermintide 2 ― Collector's Edition

5. Warhammer: Vermintide 2

GOG (gog.com)

1. Battletech

2. Frostpunk

3. Banished

4. Pillars of Eternity II: Deadfire Obsidian Edition (pre-order)

5. Divinity: Original Sin 2

Itchio's Most Popular (itch.io)

1. You Left Me

2. Check, Please

3. Inch by Inch

4. Try To Fall Asleep

5. Darkness Dwells ― AFP-Relaxnews