[1] He began gaming in his teens, starting with titles from SPI and Avalon Hill, and as a student he got into Dungeons & Dragons.

[1] Eventually German companies picked up a few of his games, such as Und Tschüss, Volldampf, and Tempus.

Wallace is known for designing complex strategy games that depict a variety of historical settings.

Two themes he has frequently used are the construction and operation of railroads, and the rise and fall of ancient civilizations.

[2] Many of his games feature economic systems, incorporating rules for income, taxation, and debt.