I played this game for hundreds of hours as a child and it's great to see it working again (the game is notorious for poor hardware support).
For a 13 year old game it holds up fairly well, although it does have several usability quirks that stand out such as build and info menus only closing when you press the X button rather than clicking anywhere off the menu as is much more common these days. Selecting moving vehicles can be a pain as well and so selecting your trucks from the vehicle status menu is advised.
Unlike many of the transport tycoon simulators out there, IG2 lets you manage the production of goods from start to finish. Each factory, mine, farm, refinery and so on, have their own production levels which change depending on the availability of resources. In other words, a ranch in grasslands produces more milk than one on a beach. This makes production more complicated as you add more stages of manufacturing before reaching a final product but the financial rewards are worth it. You also get to set the price of the products and place your stores in key locations to manage demand. Always make sure the demand is slightly higher than supply to prevent buildups of unsold goods in your storage areas. You can also export goods overseas for a reduced profit but the demand is always high. The range of goods available to export is slim though, conversely you can import goods for a higher price but without the hastle of producing it yourself.
As the game goes on you unlock a vast range of products and vehicles from inflatable dinghies to luxury cars. The number of options is impressive but may leave players feeling overwhelmed with choices that often won't make much difference.
One area the game does disappoint I feel is the transport side, although you can choose from lorries, trains, planes and ships there are few circumstances where the lorries aren't the best option, even over large distances. You don't get to set their route either so you can't choose to avoid a busy downtown area in lieu of the empty country road you just built. With trains you do get to choose which tracks to take, but you don't get to choose which platform they use and with a maximum of 2 tracks in and out of each station (2 per side if the trains turn around rather than passing through) bottlenecks at your large stations are an issue that has long since been solved on other transport sims.

It is disappointing that this remains one of the best games in the genre, it is a good game certainly, but there are lots of little issues you feel would not exist if they remade the game today. I would also advise caution when buying as it will not play on many computers. I have owned six PCs over the years and this game has only worked on two of them. This version does appear to work better than the original with the Nvidia patch, but do not be surprised if you have to ask for a refund. It's a shame that such a classic can't be enjoyed by a wider audience.

(It works for me on an Nvidia GTX 970 and on my GTX 770, both on Windows 10, since the issues seems to be graphics related you should be OK with either of these)

I played this game for hundreds of hours as a child and it's great to see it working again (the game is notorious for poor hardware support). For a 13 year old game it holds up fairly well, although it does have several usability quirks that stand out such as build and info menus only closing when you press the X button rather than clicking anywhere off the menu as is much more common these days. Selecting moving vehicles can be a pain as well and so selecting your trucks from the vehicle status menu is advised. Unlike many of the transport tycoon simulators out there, IG2 lets you manage the production of goods from start to finish. Each factory, mine, farm, refinery and so on, have their own production levels which change depending on the availability of resources. In other words, a ranch in grasslands produces more milk than one on a beach. This makes production more complicated as you add more stages of manufacturing before reaching a final product but the financial rewards are worth it. You also get to set the price of the products and place your stores in key locations to manage demand. Always make sure the demand is slightly higher than supply to prevent buildups of unsold goods in your storage areas. You can also export goods overseas for a reduced profit but the demand is always high. The range of goods available to export is slim though, conversely you can import goods for a higher price but without the hastle of producing it yourself. As the game goes on you unlock a vast range of products and vehicles from inflatable dinghies to luxury cars. The number of options is impressive but may leave players feeling overwhelmed with choices that often won't make much difference. One area the game does disappoint I feel is the transport side, although you can choose from lorries, trains, planes and ships there are few circumstances where the lorries aren't the best option, even over large distances. You don't get to set their route either so you can't choose to avoid a busy downtown area in lieu of the empty country road you just built. With trains you do get to choose which tracks to take, but you don't get to choose which platform they use and with a maximum of 2 tracks in and out of each station (2 per side if the trains turn around rather than passing through) bottlenecks at your large stations are an issue that has long since been solved on other transport sims. It is disappointing that this remains one of the best games in the genre, it is a good game certainly, but there are lots of little issues you feel would not exist if they remade the game today. I would also advise caution when buying as it will not play on many computers. I have owned six PCs over the years and this game has only worked on two of them. This version does appear to work better than the original with the Nvidia patch, but do not be surprised if you have to ask for a refund. It's a shame that such a classic can't be enjoyed by a wider audience. (It works for me on an Nvidia GTX 970 and on my GTX 770, both on Windows 10, since the issues seems to be graphics related you should be OK with either of these)