diff --git a/parser_test.go b/parser_test.go
index 6932737..e54861c 100644
--- a/parser_test.go
+++ b/parser_test.go
@@ -153,6 +153,21 @@ const exampleStateFile = `
 							"ipv4_address":""
 						}
 					}
+				},
+				"google_compute_instance.eight": {
+					"type": "123456789",
+					"primary": {
+						"id": "123456789",
+						"attributes": {
+							"network_interface.0.access_config.0.assigned_nat_ip": "10.0.0.8",
+							"network_interface.0.access_config.0.nat_ip": "10.0.0.8",
+							"network_interface.0.address": "10.0.0.8",
+							"tags.#": "1",
+							"tags.1201918879": "database",
+							"tags_fingerprint": "AqbISNuzJIs=",
+							"zone": "europe-west1-d"
+						}
+					}
 				}
 			}
 		}
@@ -166,6 +181,7 @@ const expectedListOutput = `
 		"hosts": [
 			"10.0.0.1",
 			"10.0.0.7",
+			"10.0.0.8",
 			"10.0.1.1",
 			"10.120.0.226",
 			"10.2.1.5",
@@ -188,6 +204,7 @@ const expectedListOutput = `
 	"five":  ["10.20.30.40"],
 	"six":   ["10.120.0.226"],
 	"seven": ["10.0.0.7"],
+	"eight": ["10.0.0.8"],
 
 	"one.0":   ["10.0.0.1"],
 	"dup.0":   ["10.0.0.1"],
@@ -198,6 +215,7 @@ const expectedListOutput = `
 	"five.0":  ["10.20.30.40"],
 	"six.0":   ["10.120.0.226"],
 	"seven.0": ["10.0.0.7"],
+	"eight.0": ["10.0.0.8"],
 
 	"type_aws_instance":                  ["10.0.0.1", "10.0.1.1", "50.0.0.1"],
 	"type_digitalocean_droplet":          ["192.168.0.3"],
@@ -205,8 +223,10 @@ const expectedListOutput = `
 	"type_vsphere_virtual_machine":       ["10.20.30.40"],
 	"type_openstack_compute_instance_v2": ["10.120.0.226"],
 	"type_softlayer_virtual_guest":       ["10.0.0.7"],
+	"type_google_compute_instance":       ["10.0.0.8"],
 
-	"role_web": ["10.0.0.1"]
+	"role_web": ["10.0.0.1"],
+	"database": ["10.0.0.8"]
 }
 `
 
diff --git a/resource.go b/resource.go
index 2f25d05..029daeb 100644
--- a/resource.go
+++ b/resource.go
@@ -94,8 +94,15 @@ func (r Resource) Groups() []string {
 	}
 
 	for k, v := range r.Tags() {
-		g := fmt.Sprintf("%s_%s", k, v)
-		groups = append(groups, g)
+                // google
+		if v == "" {
+			g := k
+			groups = append(groups, g)
+		// aws
+		} else {
+			g := fmt.Sprintf("%s_%s", k, v)
+			groups = append(groups, g)
+		}
 	}
 
 	return groups
@@ -117,8 +124,15 @@ func (r Resource) Tags() map[string]string {
 				t[kk] = vv
 			}
 		}
+	case "google_compute_instance":
+		for k, v := range r.Attributes() {
+			parts := strings.SplitN(k, ".", 2)
+			if len(parts) == 2 && parts[0] == "tags" && parts[1] != "#" {
+				vv := strings.ToLower(v)
+				t[vv] = ""
+			}
+		}
 	}
-
 	return t
 }