If you're interested in Matt Saettler's latest (Build Engine Game) project head to the Enhanced Duke Site

The BUILD editior is not bundled on the CD... apparently if you don't have Duke3D, Shadow Warrior, Blood, or Redneck Rampage you'll need one of them to obtain the tools.

TNT group have made an a Official addon for there WWII GI  game. At WW2GI Platoon Leader Addon
Matt Saettler's latest(Build Game) project can be found at Enhanced Duke v2.x Site

WWII G.I. is a first shooter war game by GT Interactive Software.  The game starts off landing you on the beaches of Omaha on D-Day, June 6.  You are a paratrooper that was rescued by a landing craft because your plane was shot down.  Your MISSION is to get back to your company. 

It's D-Day, what you as one of 101st Airborne have been training for. Fight your way through 30 single and multiplayer missions as you try to destroy the Nazi war machine. Up to 8-player multiplay including 8 GI Match levels, 4 capture-the-flag levels, and 4 co-operative levels.

• 30 Levels
• 14 Co-op Levels
• 4 CTF Levels
• 8 GI Multiplayer Levels
• 4 Fireteam Levels
• New Weapon Rate of Fire System
• Morale Status Bar Indicator
• Morale system affects your shooting accuracy.
• Booze and Smokes increase Morale.
  
  PLATOON LEADER additions
• Three exciting single-player-only levels: one WWII Pacific and two Vietnam War scenarios.
• 11 weapons including BAR, Colt pistol, Bazooka, M-16 Assault Rifle, White Phosphorus Grenade and M60 Machine Gun.

• See Saettler's WW2GI Info
• New CONS done by Tuomo Korva
• Rate Of Fire CON control
• Helper Bots (Explosive Expert, Medic etc..)
• Fly overs and Air Support
• First Aid (You need to stand still to bandage yourself, you can look around.)
  
  PLATOON LEADER additions
• Many new effects and features not seen in the game WW2GI.

• Plenty of new High-Res tiles.
• Some Recycled art from Duke3d and NAM

• 
  
  PLATOON LEADER additions
• You run Platoon Leader from PLATOONL.BAT Even if you have installed Platoon Leader, the game WWII GI works normally with WW2GI.EXE.

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• Compatibility conversion with Duke3D is minor. WWII GI is actually Duke v1.5. WWII GI is superior due to its source code mods.
• WWII GI can use the same tools that Duke3D uses.
• The some art tiles in WWII GI are of High-Res quality. The Duke3D Engine supports this.
• All CONs from Duke v1.3D, 1.4/1.5 and NAM are compatible. Some scripts may require minor manual editing.
• All maps from other Build Games. (requires Ken Silvermans map converters).
• Mods or TCs that modified the old duke3d.exe will not work correctly. But they will work.
• Overall compatibility is great.

Wermacht soldier - These are the most common enemy, they are armed with a Schmeisser and wait for you in parts of the playing field, when they see you they will shoot at you or even go after you. In missions where you are on the defensive they will walk towards friendly positions, sometimes shooting, until you or a friendly kills them.

Wermacht officer - These are armed only with a pistol and are harmless unless you are too close to one for too long. You get a morale boost for killing one and sometimes they tend to make their men go after you more readily.

SS Grenadiers - These are a little smarter and tougher than the Wermacht soldier. When there are more than one they tend to go after you in groups. Sometimes it seems as though I can't hit one even if I'm aiming right at him.

SS Officer - These are also armed with a pistol and you get more morale for killing one. They are also tougher than the Wermacht officer.

Sniper - These hide somewhere like in a window or bombed out building or sometimes in a hedgerow and wait for you. One shot can kill you and you should look out for these and use sniper rifle or BAR to kill them. There are a bunch in Saving Private McCurkee.

Machine gunner - These are usually in positions like bunkers or other protected structure and wait for you or other soldiers to move on their positions. These shoot rapidly and can put a quick hurting on you. They are more accurate than regular soldiers but do not move. Their assistant can't shoot at you.

Tanks - In this game the tanks do not move but they can turn their turret and shoot at you. Their shells explode and even a hit close to you may kill you. You can only kill a tank by shooting it with a bazooka or running up to it and laying a TNT or satchel charge on it.

Artillery Guns - Several missions have artillery guns. These are harmless but one mission requires you to find and attack the guns. The guns are usually hidden in a bunker or camouflaged earth emplacement, they are manned by at least 2 soldiers and usually are manned by 3 soldiers and an officer. There are also artillery vehicles like the SP gun and "panzerwerfer" rocket launcher. These are also harmless but you can not destroy them. They are also accompanied by some infantry.

Artillery barrages and air attacks - Enemy and Friendly air attacks are preprogrammed in some levels. In D-Day enemy artillery randomly falls until you get to the wall, then US aircraft bomb the installation be careful. In 88's a barrage starts when you start walking out of the forest. Urban rush has extensive barrages and you must be careful or pay the price. Sometimes enemy aircraft are triggered to make a strafing pass at you, you can sometimes see them but you can't shoot one down. If you hear a diving engine sound, duck for a wall, foxhole, building, or anything.

Friendly soldiers Sometimes these advance with you and sometimes they even actually kill a nazi. These boys are very likely to get shot and usually do. In some missions you are assigned to defend an area with these guys. If you get in the path of these men there is a chance that one will try to shoot through you, not around you  to get at a German and you will get hurt. If possible stay out of their line of fire. Sometimes it seems as though one of the men is a Benedict Arnold because he keeps shooting me even when I get out of the way. If this happens, go ahead and shoot him.

Commander The commander gives you valuable information at the beginning of most of the missions. If you did not fully hear the orders you can press spacebar to hear them again.

Interactive soldiers In D-Day and Saving Private McCurkee you have an interactive soldier. In D-Day you have a medic and Demo man you make them follow you by pressing spacebar. Pressing z+ space makes the Demo man place a mine or explosive. The medic will heal you when you walk up to him if you are injured. All private McCurkee does is follow you when you try to get him to safety.

Artillery and Air Support Sometimes you get US artillery and air attacks in some levels. In Defend you can call one attack by pressing space next to the radio in the friendly trench. The air attacks in D-Day and Atlantic Wall hamper you more than help you. There is also an artillery barrage in Under Fire and Urban Rush. If you attack too soon you will die in these missions. Hell From Above has some artillery that hits a few enemy positions.

Air Drops In some missions like Defend and Mop Up you get an air drop of ammo and you see a DC-3 fly by. The ammo crates are picked up like all ammo and give you plenty of ammo fast. The "gooney-bird" is a most welcome sight in Defend and Mop Up.

Wounded Soldiers In some missions there are some wounded men. Sometimes they don't say anything but other times they give you valuable information.

Dead Allies Being around the bodies of allied men decreases your morale.

 M1 Thompson Sub-machine Gun- good stopping power but not very accurate at long range. Thompson ammo is usually plentiful but it is limited in D-Day and Atlantic Wall. This weapon is best used at short and medium range.

 German MP-40 "Schmeisser" - better at long range than the Thompson but not as powerful. Ammo is plentiful in German territory and getting one of these in D-Day really helps you in Atlantic wall. This weapon can be used at a slightly longer range than the Thompson.

Browning Automatic Rifle (BAR) - US light machine gun very accurate very powerful. Use this weapon mostly for blasting Germans from far away to save rounds in missions where there are not enough like Hunt For The 88's, Finding private McCurkee, and Saving Private McCurkee. In missions like Seaside Sweep, and Paperwork you have a lot of BAR ammo so this is your weapon of choice.

M2 Bazooka - Used mainly against tanks this weapon is limited and should be saved for killing tanks. You will get hurt if you shoot a wall or soldier close to you.

US fragmentation grenade - Standard grenade, when thrown kills anybody in range of it. Unfortunately Gerardi can't throw these too far so I mainly use them to throw into a room where the Germans are waiting for me. These are somewhat plentiful in the game. Grenades can clear away barbed wire and destroy artillery guns. The longer you hold down CTRL the farther Gerardi throws the grenade. In combat it takes to long to hold before you can throw at faraway Germans.

Mauser 98K (Sniper Rifle) - This weapon is extremely accurate and powerful at long range. Your best use is to take out enemy snipers and machine-gunners. This gun's ammo is limited and should be used wisely. You really need it at the beginning of Hunt for the 88's and throughout Finding and Saving Private McCurkee.

Grenade Garand - This weapon is similar to a bazooka but you only get one shell. When you fire there is a short delay so you should stay up until you see the shell fly off. This is disadvantageous when there are tanks shooting at you.

Colt 1911 Pistol - Twin .45 handguns, it's a good weapon for fights in a small room, bad at long range.

 TNT Explosives- An explosive charge, it can be slapped onto a tank or certain walls or doors and blows them up. There is a short fuse so you can get away.

 Flamethrower - Besides to fry Germans this weapon can be used to clear away barbed-wire faster than grenades. If you are too close to the item you are shooting at you will get hurt.

Explosives - These are like TNT but can be placed on the ground instead of a wall. These can be used against artillery, some walls, and probably tanks.

Medkit - These bring back some of your health points but you must stand still to heal. You can have up to two. packs have either one or two per pack.

AT Rocket Mortar shells - There is a mortar in the mission Defend. To use it you pick up the box of shells, walk up to the mortar, and fire by pressing the use button. You change the range by crouching and pressing spacebar.

Mines - These are only available in multiplay but are used by "Jerry" in single player missions. They come in packs of five. Lay by pressing enter. Any foes and yourself will get hurt if you step on one. You will hear a click if you step on a mine and can try to disarm it. Mines can be cleared by tossing a grenade on it.

Mine Detector - When one of these is turned on it beeps when you are too close to a mine and you can go around the mine.