diff --git a/includes/powder.h b/includes/powder.h
index b4b0d527a..892b052e9 100644
--- a/includes/powder.h
+++ b/includes/powder.h
@@ -198,7 +198,8 @@
 #define PT_FROG 145
 #define PT_BRAN 146
 #define PT_WIND 147
-#define PT_NUM  148
+#define PT_H2   148
+#define PT_NUM  149
 
 #define R_TEMP 22
 #define MAX_TEMP 9999
@@ -299,6 +300,7 @@ int update_WIFI(UPDATE_FUNC_ARGS);
 int update_WTRV(UPDATE_FUNC_ARGS);
 int update_YEST(UPDATE_FUNC_ARGS);
 int update_O2(UPDATE_FUNC_ARGS);
+int update_H2(UPDATE_FUNC_ARGS);
 
 int update_MISC(UPDATE_FUNC_ARGS);
 int update_legacy_PYRO(UPDATE_FUNC_ARGS);
@@ -520,6 +522,7 @@ static const part_type ptypes[PT_NUM] =
 	{"FROG",	PIXPACK(0x00AA00),	0.0f,	0.00f * CFDS,	0.90f,	0.00f,	0.0f,	0.0f,	0.00f,	0.000f	* CFDS,	0,	0,		0,	0,	0,	1,	100,	SC_LIFE,		9000.0f,				40,		"Frogs S12/B34/3", ST_NONE, TYPE_SOLID|PROP_LIFE, NULL},
 	{"BRAN",	PIXPACK(0xCCCC00),	0.0f,	0.00f * CFDS,	0.90f,	0.00f,	0.0f,	0.0f,	0.00f,	0.000f	* CFDS,	0,	0,		0,	0,	0,	1,	100,	SC_LIFE,		9000.0f,				40,		"Brian 6 S6/B246/3", ST_NONE, TYPE_SOLID|PROP_LIFE, NULL},
 	{"WIND",	PIXPACK(0x000000),  0.0f,	0.00f * CFDS,	0.90f,  0.00f,  0.0f,	0.0f,	0.00f,	0.000f  * CFDS,	0,  0,		0,  0,  0,  1,  100,	SC_SPECIAL,		0.0f,					40,		"Drag tool", ST_NONE, ST_NONE, NULL},
+	{"H2",		PIXPACK(0x5070FF),	2.0f,	0.00f * CFDS,	0.99f,	0.30f,	-0.10f,	0.00f,	3.00f,	0.000f	* CFDS, 0,  0,		0,	0,	0,	1,	1,		SC_GAS,			R_TEMP+0.0f +273.15f,	251,	"Combines with O2 to make WATR", ST_GAS, TYPE_GAS, &update_H2},
 	//Name		Colour				Advec	Airdrag			Airloss	Loss	Collid	Grav	Diffus	Hotair			Fal	Burn	Exp	Mel	Hrd	M	Weights	Section			H						Ins		Description
 };
 
@@ -682,7 +685,8 @@ static part_transition ptransitions[PT_NUM] =
 	/* GOL  */ {IPL,	NT,			IPH,	NT,			ITL,	NT,			ITH,	NT},
 	/* GOL  */ {IPL,	NT,			IPH,	NT,			ITL,	NT,			ITH,	NT},
 	/* GOL  */ {IPL,	NT,			IPH,	NT,			ITL,	NT,			ITH,	NT},
-	/* WIND */ {IPL,	NT,			IPH,	NT,			ITL,	NT,			ITH,	NT}, 
+	/* WIND */ {IPL,	NT,			IPH,	NT,			ITL,	NT,			ITH,	NT},
+	/* H2   */ {IPL,	NT,			IPH,	NT,			ITL,	NT,			ITH,	NT}, 
 };
 #undef IPL
 #undef IPH
diff --git a/src/elements/O2.c b/src/elements/O2.c
index 1413d0a43..4c019d336 100644
--- a/src/elements/O2.c
+++ b/src/elements/O2.c
@@ -2,7 +2,7 @@
 
 int update_O2(UPDATE_FUNC_ARGS)
 {
-    int r,rx,ry;
+    int r,rx,ry,n,nx,ny;
     for(rx=-2; rx<3; rx++)
         for(ry=-2; ry<3; ry++)
 			if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
@@ -17,7 +17,26 @@ int update_O2(UPDATE_FUNC_ARGS)
                     parts[r>>8].temp+=(rand()/(RAND_MAX/100));
                     parts[i].tmp++;
                 }
+
             }
+
+    if(pv[y\CELL][x\CELL] > 8.0f)
+    {
+        for(rx=-2; rx<3; rx++)
+            for(ry=-2; ry<3; ry++)
+			    if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
+			    {
+				    r = pmap[y+ry][x+rx];
+				    if ((r>>8)>=NPART || !r)
+					    continue;
+                    if((r&0xFF)==PT_H2)
+                        if(50<(rand()/(RAND_MAX/100)))
+                            part_change_type(i,x,y,PT_WATR)
+                        part_change_type(r,rx,rx,PT_WATR)
+                }
+    }
+
+
     if(parts[i].tmp>=50)
     {
         create_part(i,x,y,PT_FIRE);
diff --git a/src/elements/h2.c b/src/elements/h2.c
new file mode 100644
index 000000000..8e83ecd98
--- /dev/null
+++ b/src/elements/h2.c
@@ -0,0 +1,20 @@
+#include <element.h>
+
+int update_H2(UPDATE_FUNC_ARGS)
+{
+    int r,rx,ry,rt;
+    for(rx=-2; rx<3; rx++)
+        for(ry=-2; ry<3; ry++)
+			if (x+rx>=0 && y+ry>0 && x+rx<XRES && y+ry<YRES && (rx || ry))
+			{
+				r = pmap[y+ry][x+rx];
+                rt = (r&0xFF);
+				if ((r>>8)>=NPART || !r)
+					continue;
+                if(pv[y\CELL][x\CELL] > 8.0f && rt == PT_DESL)
+                {
+                    part_change_type(r,nx,ny,PT_WATR)
+                    part_change_type(i,x,y,PT_OIL)
+                }
+            }
+}