diff --git a/utils/cheatsheet_viewer.sh b/utils/cheatsheet_viewer.sh
index e9cd58547aedc214e19f718c25c4e5e17349af13..c8365d1f3d6c5382db14fd08b4c41a488905fb36 100755
--- a/utils/cheatsheet_viewer.sh
+++ b/utils/cheatsheet_viewer.sh
@@ -110,6 +110,12 @@ toggle [PROFILE]
 
 $PROGRAM accepts the following options:
 
+    -o
+        Display cheatsheets in "overlay" mode, keeping the current
+        window in focus, and making the cheatsheet window
+        always-on-top. Useful when playing games and similar. The
+        cheatsheet window can still be focused using keyboard and
+        mouse-clicks.
     -q
         Quiet mode.
     -d
@@ -245,16 +251,21 @@ function command_info() {
 #   $2 (profile)
 #     Profile name.
 #
+#   $3 (overlay_mode)
+#     Specify if cheatsheets should be shown in overlay mode.
+#
 # Returns:
 #   0 on success, 1 otherwise.
 #
 function command_display() {
     local config_dir="$1"
     local profile="$2"
+    local overlay_mode="$3"
 
     local profile_dir="$config_dir/profiles/$profile"
     local cheatsheets_file="$profile_dir/cheatsheets"
 
+    local caller_window_id
     local cheatsheets=()
 
     if [[ ! -d $profile_dir ]]; then
@@ -271,15 +282,31 @@ function command_display() {
         return 0
     fi
 
+    if (( overlay_mode )); then
+        caller_window_id=$(xprop -root | grep '^_NET_ACTIVE_WINDOW(WINDOW)' | sed -e 's/.*window id # //')
+    fi
+
+
     local pqiv_options=(
         "--scale-mode-screen-fraction=1.0"
         "--zoom-level=1.0"
         "--transparent-background"
         "--hide-info-box"
-        "--window-title=cheatsheet-viewer"
+        "--window-title=cheatsheet-viewer-$profile"
     )
 
     pqiv "${pqiv_options[@]}" "${cheatsheets[@]}" &
+
+    if (( overlay_mode )); then
+        local counter=0
+        while (( counter < 10 )) && ! wmctrl -l | grep -q "cheatsheet-viewer-$profile"; do
+            sleep 0.05
+            (( counter+=1 ))
+        done
+
+        wmctrl -F -r "cheatsheet-viewer-$profile" -b add,above
+        wmctrl -i -a "$caller_window_id"
+    fi
 }
 
 
@@ -294,17 +321,22 @@ function command_display() {
 #   $2 (profile)
 #     Profile name.
 #
+#   $3 (overlay_mode)
+#     Specify if cheatsheets should be shown in overlay mode.
+#
 # Returns:
 #   0 on success, 1 otherwise.
 #
 function command_toggle() {
     local config_dir="$1"
     local profile="$2"
+    local overlay_mode="$3"
+
     local profile_dir="$config_dir/profiles/$profile"
     local cheatsheets_file="$profile_dir/cheatsheets"
     local last_cheatsheet_file="$profile_dir/last"
 
-    local current_process_id current_profile last_cheatsheet
+    local current_process_id current_profile last_cheatsheet caller_window_id
 
     local cheatsheets=()
 
@@ -340,6 +372,10 @@ function command_toggle() {
     # If requested profile is not the same as current one, we want to
     # show cheatsheets from requested profile.
     if [[ $current_profile != "$profile" ]]; then
+        if (( overlay_mode )); then
+            caller_window_id=$(xprop -root | grep '^_NET_ACTIVE_WINDOW(WINDOW)' | sed -e 's/.*window id # //')
+        fi
+
         local pqiv_options=(
             "--scale-mode-screen-fraction=1.0"
             "--zoom-level=1.0"
@@ -360,6 +396,17 @@ function command_toggle() {
                 echo "$CURRENT_FILE_NAME" > "$profile_dir/last"
             done < <(pqiv "${pqiv_options[@]}" "${cheatsheets[@]}" | grep --line-buffered '^CURRENT_FILE_NAME=')
         ) &
+
+        if (( overlay_mode )); then
+            local counter=0
+            while (( counter < 10 )) && ! wmctrl -l | grep -q "cheatsheet-viewer-$profile"; do
+                sleep 0.05
+                (( counter+=1 ))
+            done
+
+            wmctrl -F -r "cheatsheet-viewer-$profile" -b add,above
+            wmctrl -i -a "$caller_window_id"
+        fi
     fi
 }
 
@@ -424,6 +471,9 @@ QUIET=0
 # Default paths, directories etc.
 CONFIG_DIR="$HOME/.config/cheatsheet_viewer"
 
+# Default option values.
+OVERLAY_MODE=0
+
 # If no arguments were given, just show usage help.
 if [[ -z ${1-} ]]; then
     short_help
@@ -431,8 +481,9 @@ if [[ -z ${1-} ]]; then
 fi
 
 # Parse the arguments
-while getopts "qdvh" opt; do
+while getopts "oqdvh" opt; do
     case "$opt" in
+        o) OVERLAY_MODE=1;;
         q) QUIET=1;;
         d) DEBUG=1;;
         v) version
@@ -476,14 +527,14 @@ elif [[ $COMMAND == display ]]; then
     PROFILE="${1-default}"
     shift
 
-    command_display "$CONFIG_DIR" "$PROFILE"
+    command_display "$CONFIG_DIR" "$PROFILE" "$OVERLAY_MODE"
 
 elif [[ $COMMAND == toggle ]]; then
 
     PROFILE="${1-default}"
     shift
 
-    command_toggle "$CONFIG_DIR" "$PROFILE"
+    command_toggle "$CONFIG_DIR" "$PROFILE" "$OVERLAY_MODE"
 
 else