diff --git a/Arcade-Blockade.sv b/Arcade-Blockade.sv
index 382ccd2..99c2b87 100644
--- a/Arcade-Blockade.sv
+++ b/Arcade-Blockade.sv
@@ -1,22 +1,23 @@
-//============================================================================
-//  Arcade: Blockade
-//
-//  TODO - MENTIONS
-//
-//  This program is free software; you can redistribute it and/or modify it
-//  under the terms of the GNU General Public License as published by the Free
-//  Software Foundation; either version 2 of the License, or (at your option)
-//  any later version.
-//
-//  This program is distributed in the hope that it will be useful, but WITHOUT
-//  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-//  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
-//  more details.
-//
-//  You should have received a copy of the GNU General Public License along
-//  with this program; if not, write to the Free Software Foundation, Inc.,
-//  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-//============================================================================
+/*============================================================================
+	FPGA implementation of Blockade by Gremlin Industries for MiSTer
+
+	Author: Jim Gregory - https://github.com/JimmyStones/
+	Version: 1.0
+	Date: 2022-02-13
+
+	This program is free software; you can redistribute it and/or modify it
+	under the terms of the GNU General Public License as published by the Free
+	Software Foundation; either version 3 of the License, or (at your option)
+	any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License along
+	with this program. If not, see <http://www.gnu.org/licenses/>.
+===========================================================================*/
 
 module emu
 (
diff --git a/rtl/blockade.v b/rtl/blockade.v
index d3d1f24..942e458 100644
--- a/rtl/blockade.v
+++ b/rtl/blockade.v
@@ -307,7 +307,7 @@ begin
 end
 
 // Amplify square wave to produce output
-wire signed [15:0] sound_out = u6766_count == 8'd255 ? 0 : (!u60_2_q ? -18000 : 18000);
+wire signed [15:0] sound_out = u6766_count == 8'd255 ? 0 : (!u60_2_q ? -12000 : 12000);
 
 // Low-pass filter the square wave
 // - Cut-off frequency of 723.43Hz calculated from 220K resistor and 0.001µF capacitor pairing
diff --git a/verilator/sim_main.cpp b/verilator/sim_main.cpp
index f8016a5..bfaf50c 100644
--- a/verilator/sim_main.cpp
+++ b/verilator/sim_main.cpp
@@ -37,15 +37,15 @@ using namespace std;
 int initialReset = 48;
 bool run_enable = 1;
 bool pause_game = 0;
-int batchSize = 25000000 / 100000;
+int batchSize = 25000000 / 100;
 bool single_step = 0;
 bool multi_step = 0;
 int multi_step_amount = 1024;
 
-#define IS_BLOCKADE
+//#define IS_BLOCKADE
 //#define IS_COMOTION
 //#define IS_HUSTLE
-//#define IS_BLASTO
+#define IS_BLASTO
 
 
 // Debug GUI 
@@ -275,6 +275,10 @@ bool vbl_last;
 
 #endif
 
+void saveScreenshot() {
+
+}
+
 int verilate()
 {
 
@@ -490,14 +494,14 @@ int main(int argc, char** argv, char** env)
 #endif
 
 #ifdef IS_COMOTION
-	bus.QueueDownload("roms/comotion/316-007.u2", 0);
-	bus.QueueDownload("roms/comotion/316-008.u3", 0);
-	bus.QueueDownload("roms/comotion/316-009.u4", 0);
-	bus.QueueDownload("roms/comotion/316-010.u5", 0);
-	bus.QueueDownload("roms/comotion/316-006.u43", 0);
-	bus.QueueDownload("roms/comotion/316-006.u43", 0); // Repeat PROMs for padding (256 bytes only)
-	bus.QueueDownload("roms/comotion/316-005.u29", 0);
-	bus.QueueDownload("roms/comotion/316-005.u29", 0); // Repeat PROMs for padding (256 bytes only)
+	bus.QueueDownload("roms/comotion/316-0007.u2", 0);
+	bus.QueueDownload("roms/comotion/316-0008.u3", 0);
+	bus.QueueDownload("roms/comotion/316-0009.u4", 0);
+	bus.QueueDownload("roms/comotion/316-0010.u5", 0);
+	bus.QueueDownload("roms/comotion/316-0006.u43", 0);
+	bus.QueueDownload("roms/comotion/316-0006.u43", 0); // Repeat PROMs for padding (256 bytes only)
+	bus.QueueDownload("roms/comotion/316-0005.u29", 0);
+	bus.QueueDownload("roms/comotion/316-0005.u29", 0); // Repeat PROMs for padding (256 bytes only)
 	// Set overlay
 	top->emu__DOT__overlay_type = 0;
 #endif
@@ -514,12 +518,12 @@ int main(int argc, char** argv, char** env)
 #endif
 
 #ifdef IS_BLASTO
-	bus.QueueDownload("roms/blasto/blasto.u2", 0);
-	bus.QueueDownload("roms/blasto/blasto.u3", 0);
-	bus.QueueDownload("roms/blasto/blasto.u4", 0); 
-	bus.QueueDownload("roms/blasto/blasto.u5", 0); 
-	bus.QueueDownload("roms/blasto/blasto.u29", 0);
-	bus.QueueDownload("roms/blasto/blasto.u43", 0);
+	bus.QueueDownload("roms/blasto/316-0089.u2", 0);
+	bus.QueueDownload("roms/blasto/316-0090.u3", 0);
+	bus.QueueDownload("roms/blasto/316-0091.u4", 0); 
+	bus.QueueDownload("roms/blasto/316-0092.u5", 0); 
+	bus.QueueDownload("roms/blasto/316-0093.u29", 0);
+	bus.QueueDownload("roms/blasto/316-0094.u43", 0);
 	// Set overlay
 	top->emu__DOT__overlay_type = 1;
 #endif
@@ -584,6 +588,8 @@ int main(int argc, char** argv, char** env)
 		ImGui::Checkbox("Pause game", &pause_game); ImGui::SameLine();
 		top->emu__DOT__pause_cpu = pause_game;
 
+		if (ImGui::Button("Save screenshot")) { saveScreenshot(); }
+
 #ifdef CPU_DEBUG
 		ImGui::NewLine();
 		ImGui::Checkbox("Log CPU instructions", &log_instructions);