想知道免费游戏的威力吗？澳大利亚开发商The Voxel Agents推出的两款iOS游戏《列车指挥员》（Train Conductor）和《列车指挥员2》可以证明免费游戏的确潜力巨大。

据了解，这两款轨道类型的手机游戏，原来还是付费版本的时候，尽管销量已经超过14万份，但一直无缘App Store付费榜单的前列。

TrainConductor-Logo

因《列车指挥员2》被中国独立游戏节（Independent Game Festival in China）提名为获奖游戏，The Voxel Agents大为振奋，遂将原始版本《列车指挥员》通过FreeAppADay进行限时免费促销。

结果在五天时间内，该游戏下载量达到200万次，在25个国家的应用排名中夺冠，通过这种交叉促销方式，《列车指挥员2》在付费应用榜单中的名次也节节攀升。

截止目前，《列车指挥员2》在美国付费游戏榜单的排名是第16位，最高峰时曾上升到第9位。（本文为游戏邦/gamerboom.com编译，转载请注明来源：游戏邦）

Train Conductor goes FreeAppADay, does 2 million downloads in 5 days

Do you need more proof that free works?

Probably not, but to hammer another nail into the coffin of the business plan you gave the bank manager last year comes a case study from Australian developer The Voxel Agents.

It’s released two iOS games, Train Conductor and Train Conductor 2 (oh and what you say Flipper? Dolphin Hero too, apparently).

On the rails

The former two provide solid track-based entertainment, but until this week hadn’t really challenged the top of the App Store – although the series has historically sold more than 140,000 copies.

Train Conductor 2 made it to the nominations for the Independent Game Festival in China, which encouraged The Voxel Agents to set the original Train Conductor free via FreeAppADay.

In five days, it’s been downloaded two million times, becoming #1 in 25 countries, and in that cross promotional way, this has boosted Train Conductor 2 up the paid charts.

At time of writing, it’s #16 in the US paid charts, peaking at #9. （source:pocketgamer）